Why doesn't the box say "may cause drowsiness" on the MucinexDM?

I am sensitive to drugs, especially the ones that say "may cause drowsiness". However, I take those kind but have to be careful when and where I take them. Today I was home (thank goodness) and took the MucinexDM, within an hour I was asleep and slept for hours. I have not coughed in all that time so it works great! A warning on the box would be helpful. I would hate to think what would have happened if I had taken it and drove off. I understand that I am more sensitive than most people but I would think that statement on the box would protect you as well.

I appreciate your comment and the tip. (what does the D and DM stand for?) I investigated the drugs contained in the DM and found that it is in a lot of other cold medicines but usually in smaller amounts. I am seldom sick. I do not know a lot about drugs. I heard about Mucinex and decided to try it. The only kind they had was the "DM" on the shelf so I wasn't, at the time, aware of other kinds. How am I suppose to know which drug ingredient does what or is more likely to cause drowsiness. I read the box and it said nothing to that affect. I, like a lot of people, rely on the warnings on the box. I take responsibility for what goes into my body. My lesson learned it to ask a pharmicist before purchasing an unfamiliar product. I just thought I would let the makers of Mucinex know how it effected me in case they might want to ADD that as a WARNING on the label.

My lesson learned it to ask a pharmicist before purchasing an unfamiliar product. very good leson i worked in a pharmacy and you cant bring meds back but people buy things then come back trying to get a refund...

also D is decongestant but it uses the psudophed while DM has something other type of decongestant. and have no idea what the M stands for...

All companies are trying to make sure that all warnings are on the box. For their sake of being sued and for your sake too. Did you know when you get novacaine for a filling, that if you hit someone or just get pulled over, you can be arrested for driving while under the influence. Now that will make you think twice. We all have to be responsible for our bodies and what we put into it.If there is any chance you will or think it will make you drowsy, do not drive. Stay at home and you will get better quicker.

Drugs.com provides accurate and independent information on more than 24,000 prescription drugs, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment.